<template>
  <!-- 引入container布局 -->
  <el-container class="home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/touxiang.png" alt />
        <span>个人运动平台</span>
      </div>
      <el-button type="info" @click="logout">安全退出</el-button>
    </el-header>
    <!-- 主体 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse?'64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu background-color="#545c64" text-color="#fff" active-text-color="#409eff"
        unique-opened :collapse = "isCollapse" :collapse-transition="false" :router="true"
        :default-active="activePath">
          <!-- 一级菜单 -->
          <el-submenu :index="item.path" v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="iconsObject[item.id]"></i>
              <span>{{item.title}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="it.path" v-for="it in item.sList" :key="it.id" @click="saveNavState(it.path)">
              <template slot="title">
                <i :class="iconsObject[it.id]"></i>
                <span>{{it.title}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 主体内容 -->
      <el-main>
          <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      //菜单列表
      menuList: [],
      isCollapse: false,//伸缩
      iconsObject: {
          '100':'iconfont icon-guanliyuan',
          '200':'iconfont icon-yundong1',
          '101':'iconfont icon-liebiao',
          '102':'iconfont icon-icon',
          '103':'iconfont icon-yundong',
          '104':'iconfont icon-shangpin',
          '201':'iconfont icon-shu',
          '202':'iconfont icon-qialuli',
          '203':'iconfont icon-shiwu',
          '204':'iconfont icon-icon',
      },
      activePath:'/welcome',//默认路径
    };
  },
  // 类似于onload事件,页面一加载就要做的事情
  created() {
    // 查询menuList
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem('activePath');// 取出Session里的path 动态修改 activePath
  },

  methods: {
    // 安全退出
    logout() {
      window.sessionStorage.clear(); // 清除session
      this.$router.push({ path: "/login" }); // 页面路由跳转回登录页
    },
    // 获取导航菜单方法
    async getMenuList() {
      const {data:res} = await this.$http.get("menus");
      if(res.flag != 200) return this.$message.error("获取列表失败!!!");//访问失败的错误信息
      this.menuList = res.menus; // 访问成功后数据回填
    },
    // 控制伸缩
    toggleCollapse(){
        this.isCollapse = !this.isCollapse;
    },
    // 保存路径
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath);// 存放在session里
      this.activePath = activePath;
    },
  },
};
</script>

<style lang='less' scoped>
.home-container {
  height: 100%;
}
// 头样式
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0%;
  align-items: center;
  color: #fff;
  font-size: 20px;
  div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
// 侧边样式
.el-aside {
  background-color: #333744;
  .el-menu {
      border-right: none;//解决侧边栏拉开后没对齐
  }
}
// 主体样式
.el-main {
  background-color: #eaedf1;
}
//头像样式
img {
  width: 65px;
  height: 55px;
}
// |||伸缩按钮样式
.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;// 显示小手
}
</style>